The task
With reference to Challenge 3 of VAST Challenge 2022, you are required to reveal the economic of the city of Engagement, Ohio USA by using appropriate static and interactive statistical graphics methods
Introduction
This exercise requires us to apply the skills you had learned in
Lesson 1 and Hands-on Exercise 1 to reveal the demographic of the city
of Engagement, Ohio USA by using appropriate static statistical graphics
methods. The data should be processed by using appropriate tidyverse
family of packages and the statistical graphics must be prepared using
ggplot2 and its extensions. 
packages = c('ggiraph', 'plotly', 'tidyverse', 'DT','gganimate',
'knitr', 'ggdist', 'scales', 'grid', 'gridExtra',
'patchwork','ggsignif','gghighlight',"hrbrthemes",
'readxl', 'gifski', 'gapminder','treemap', 'treemapify',
'rPackedBar','ggridges','rmarkdown','crosstalk',
'd3scatter','tidycensus','timetk','ggseas','lubridate','ggrepel')
for(p in packages) {
if(!require(p, character.only = T)) {
install.packages(p)
}
library(p, character.only = T)
}
financial <- read_csv('./data/FinancialJournal.csv')
participant_data <- read_csv('./data/Participants.csv')
participant_data$educationLevel<-factor(participant_data$educationLevel,ordered=TRUE,levels=c('Low','HighSchoolOrCollege',"Bachelors","Graduate"))
brks <- c(17, 20, 30, 40, 50, 60, Inf)
grps <- c('<=20', '21-30','31-40', '41-50', '51-60', '>60')
participant_data$Age_Group <- cut(participant_data$age, breaks=brks, labels = grps, right = FALSE)
glimpse(financial)
Rows: 1,856,330
Columns: 4
$ participantId <dbl> 0, 0, 0, 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4, 5…
$ timestamp <dttm> 2022-03-01, 2022-03-01, 2022-03-01, 2022-03-0…
$ category <chr> "Wage", "Shelter", "Education", "Wage", "Shelt…
$ amount <dbl> 2472.50756, -554.98862, -38.00538, 2046.56221,…Visual Analysis
Our data includes two csv files from the VAST data source, namely FinancialJournal.csv and Participants.csv. To show the financial health of Ohio city, we derived three supporting tables from the original data. Generally, we want to ananlyze the spending habits and wage status of people with different education background, age, and household size.
Financial Health change over period
The overview of income, spending, and remaining per month
Supporting tables:
- monthly_finance_status: the total income, spending, and remaining of each month for all the participants.
financial$DateTime <- as.POSIXct(financial$timestamp, format="%Y-%m-%d %H:%M:%S")
financial$year <- format(financial$DateTime, format="%Y")
financial$month <- format(financial$DateTime, format="%m")
financial$day <- format(financial$DateTime, format="%d")
financial$hour <- format(financial$DateTime, format="%H")
financial$minute <- format(financial$DateTime, format="%M")
financial$second <- format(financial$DateTime, format="%S")
financial$date <- format(financial$DateTime, format="%Y %b")
monthly_income <- financial %>%
filter(category %in% c('Wage', 'RentAdjustment')) %>%
group_by(month) %>%
summarise(income = sum(amount))
monthly_spend <- financial %>%
filter(!category %in% c('Wage', 'RentAdjustment')) %>%
group_by(month) %>%
summarise(spend = sum(abs(amount)))
monthly_finance_status <- merge(monthly_income,monthly_spend,by=c("month"))
monthly_finance_status$spendRatio <- monthly_finance_status$spend / monthly_finance_status$income
monthly_finance_status$remain <- (monthly_finance_status$income - monthly_finance_status$spend)
monthly_finance_status$remain <- round(monthly_finance_status$remain, 1)
monthly_finance_status <- monthly_finance_status[order(as.Date(monthly_finance_status$month, format="%m")),]
paged_table(monthly_finance_status, options = list(rows.print = 15, cols.print = 5))
- spending_monthly_cat: total spending of the residence on each category per month.
spending_monthly_cat <- financial %>%
filter(!category %in% c('Wage', 'RentAdjustment')) %>%
group_by(month, category) %>%
summarise(spend_cat = - sum(amount))
cost_ratio <- merge(spending_monthly_cat, monthly_finance_status, by=c("month"))
cost_ratio$spend_cat_ratio = cost_ratio$spend_cat / cost_ratio$income
paged_table(cost_ratio, options = list(rows.print = 15, cols.print = 5))
- income_monthly_cat: sum of income of the residence on each category per month.
income_monthly_cat <- financial %>%
filter(category %in% c('Wage', 'RentAdjustment')) %>%
group_by(month, category) %>%
summarise(income_cat = round(sum(amount),1))
paged_table(income_monthly_cat, options = list(rows.print = 15, cols.print = 5))
Spending overview
As we can see, people spend more money in Feb-June.
And most people spend 30%-35% of their income per month, and save the 70%. And we can see that with the increase of income, people also spend more.
p1 <- ggplot(data=monthly_finance_status, aes(x=month,
y= spendRatio,
group=1,
text = paste('</br>Month: ', month,
'</br>Spend/Income: ', 100*round(spendRatio,4),"%"))) +
geom_point()+
geom_line(stat = "identity")+
geom_hline(yintercept=0.36, alpha = 0.3, linetype = 2) +
geom_hline(yintercept=0.316, alpha = 0.3, linetype = 2) +
labs(y= 'Spend/income ratio', x= 'Month',
title = "Fig 1.1 Spend/income (monthly)",
subtitle = "People spend 30%-35% of their income")
#geom_bar(position="dodge2", stat = "identity")
p2 <- ggplot(data=monthly_finance_status, aes(x=month,
y= spend,
group=1,
text = paste('</br>Month: ', month,
'</br>Spend/Income: ', 100*round(spendRatio,4),"%"))) +
geom_point()+
geom_line(stat = "identity")+
scale_y_continuous(labels = dollar)+
labs(y= 'Spend/income ratio', x= 'Month',
title = "Fig 1.2 Spend (monthly)",
subtitle = "Most people spending surges in Mar-May")
#ggplotly(p4,tooltip = "text")
p3 <- ggplot(data=monthly_finance_status, aes(x=month,
y= income,
group=1,
text = paste('</br>Month: ', month,
'</br>Spend/Income: ', 100*round(spendRatio,4),"%"))) +
geom_point()+
geom_line(stat = "identity")+
scale_y_continuous(labels = dollar)+
labs(y= 'Spend/income ratio', x= 'Month',
title = "Fig 1.3 Income (monthly)",
subtitle = "People's income surges in Mar-May")
p1|(p2/p3)
From the bar plot of total spending by category per month below, we can infer that the significant rise in spending in March-May may result from the increase of Shelter. Except March-May, the spending on each category is stable through time.
p2 <- ggplot(data=spending_monthly_cat, aes(x=month,
y= spend_cat,
color=category,
fill = category,
group=category,
text = paste('</br>Month: ', month,
'</br>Spending: ', round(spend_cat,0),
'</br>Category: ', category))) +
guides(fill = "none") +
geom_bar(stat='identity')+
facet_wrap(~ category) +
scale_y_continuous(labels = dollar)+
labs(y= 'Sum of spending', x= 'Month',
title = "Fig 2. Sum of spending by category (per month)",
subtitle = "Spending on shelter increase sharply in March-May")
#geom_bar(position="dodge2", stat = "identity") +
# facet_grid(category~. )
ggplotly(p2,tooltip="text")
And we can see that residents in Ohio spend nearly half of their spending on Shelter.
pie_data <- financial %>%
filter(!category %in% c('Wage', 'RentAdjustment')) %>%
group_by(category) %>%
summarise(spend = sum(-amount))
pie_data$fraction <- pie_data$spend / sum(pie_data$spend)
pie_data <- pie_data %>%
arrange(fraction) %>%
mutate(labels = paste0(category,'\n',scales::percent(fraction)))
paged_table(pie_data, options = list(rows.print = 15, cols.print = 5))
p3 <- ggplot(data=pie_data, aes(x="", y=fraction, fill=category)) +
geom_bar(width=1, stat="identity") +
geom_text(aes(label = labels),
position = position_stack(vjust = 0.5)) +
labs(y= 'Fraction of spending', x= 'Month',
title = "Fig 3. Fraction of spending by category(total)",
subtitle = "The largest part of spending is for 'Shelter'")+
coord_polar("y", start=0) +
theme(axis.title.x=element_blank(),
axis.text.x=element_blank(),
axis.ticks.x=element_blank(),
axis.title.y=element_blank())
p3
Here is the line plot for the relative cost per category comparing to the participants’ income. As we can see, people spend a relatively low portion of their income in education, while spend large portions on shelter, food and recreation .
And we can see a trend that people are spending more on food, less on other categories.
p4<-ggplot(data=cost_ratio, aes(x=month,
y= spend_cat_ratio,
group=category,
color=category,
text = paste(
'</br>Category: ', category,
'</br>Month: ', month,
'</br>Ratio in Income: ', 100*round(spend_cat_ratio,4),"%"))) +
geom_point()+
geom_line(stat = "identity")+
geom_smooth(method = "loess", se = FALSE) +
facet_wrap(~ category, scales = "free_y") +
labs(y= 'Spend/income ratio', x= 'Month',
title = "Fig 4. Spend/income trend by category (monthly)",
subtitle = "")
#geom_bar(position="dodge2", stat = "identity")
ggplotly(p4,tooltip="text")
Income overview
The income of participants consists of two parts, namely Wage and RentAdjustment. We can see that most of their income is wage. Only a small portion is from RentAdjustment in March.
p5 <- ggplot(data=income_monthly_cat, aes(x=month,
y= income_cat,
group=category,
fill = category,
text = paste('</br>Category: ', category,
'</br>Month: ', month,
'</br>Income: ', income_cat
)))+
guides(fill = "none") +
geom_bar(stat='identity')+
scale_y_continuous(labels = dollar)+
labs(y= 'Sum of income', x= 'Month',
title = "Fig 5. Sum of income by category (per month)",
subtitle = "Spending on shelter increase sharply in March-May")
#geom_bar(position="dodge2", stat = "identity") +
# facet_grid(category~. )
ggplotly(p5,tooltip="text")
What is affecting the wage?
- wage_info: we grouped people into 5 wage groups, which are ‘<=100’, ‘101-200’, ‘201-300’, ‘301-400’, ‘>400’ to analyse their background and spending habits separately.
wage <- financial %>%
filter(category == "Wage") %>%
group_by(participantId) %>%
summarise(wage = mean(amount))
brks <- c(0, 100, 200, 300, 400, Inf)
grps <- c('<=100', '101-200', '201-300', '301-400', '>400')
wage$Wage_Group <- cut(wage$wage, breaks=brks, labels = grps, right = FALSE)
wage <- financial %>%
filter(category == 'Wage') %>%
group_by(participantId) %>%
summarise(wage = round(mean(amount),0))
brks <- c(0, 100, 200, 300, 400, Inf)
grps <- c('<=100', '101-200', '201-300', '301-400', '>400')
wage$Wage_Group <- cut(wage$wage, breaks=brks, labels = grps, right = FALSE)
wage_info <- merge(wage, participant_data, by=c("participantId"))
paged_table(wage_info, options = list(rows.print = 15, cols.print = 5))
Most people People with higher education have a higher mean salary.
p6 <- ggplot(data=wage_info, aes(x = educationLevel,
y = wage))+
geom_boxplot(position="dodge",aes(x = educationLevel, y = wage)) +
stat_summary(geom = "point",
fun="mean",
colour ="red",
size=2) +
geom_hline(yintercept=173.38, alpha = 0.3, linetype = 2) +
# stat_summary(aes(label = round(..y.., 0)), fun=mean, geom = "label_repel", size=3, angle=150) +
labs(y= 'Wage', x= 'educationLevel',
title = "Fig6: Wage Distribution by Education Level",
subtitle = "Most people get 50 per month")
ggplotly(p6)
But age doesn’t influence wage much
p7 <- ggplot(data=wage_info, aes(x = wage, y = Age_Group, fill = 0.5 - abs(0.5 - stat(ecdf)))) +
stat_density_ridges(
geom = "density_ridges_gradient",
calc_ecdf = TRUE,
jittered_points = TRUE, quantile_lines = TRUE, scale = 0.9, alpha = 0.7,
vline_size = 1, vline_color = "red",
point_size = 0.4, point_alpha = 1,
position = position_raincloud(adjust_vlines = TRUE)
) +
scale_x_continuous(expand = c(0, 0)) +
scale_y_discrete(expand = expand_scale(mult = c(0, 0))) +
coord_cartesian(clip = "off") +
theme_ridges(grid = FALSE, center_axis_labels = TRUE)+
scale_fill_viridis_c(name = "Tail probability", direction = -1)+
ggtitle("Fig7. Distribution of wage with different Age Group")+
theme(plot.title = element_text(size = 12))
p7
What are the spending habits of different people?
personal_spending_cat <- financial %>%
filter(!category %in% c('Wage', 'RentAdjustment')) %>%
group_by(category, participantId) %>%
summarise(spend_cat = - sum(amount))
paged_table(personal_spending_cat, options = list(rows.print = 15, cols.print = 5))